Wireless Controller Device

ABSTRACT

A remote wireless device is provided that operates a user interface specific to a particular target application or device. The wireless device receives information regarding the status or operation of the target&#39;s application, and uses that information to determine what information and controls to present to the remote user. The remote user views information regarding the target application, and makes desired control selections using the available controls. The wireless device generates a message according to the control selections, and transmits the message to the target device. The target device acts responsive to the control message, and updated operational information may be sent to the remote wireless device.

BACKGROUND

The field of the present invention is applications for operation on awireless remote device. More particularly, the present invention relatesto a wireless remote device configured to operate as a wireless remotecontroller.

Wireless devices are widely used today, and their use is becoming morewidespread as additional applications and devices become available.Also, the network infrastructures have improved wireless coverage, aswell as communication quality and speeds. For example, a wireless mobilehandset has improved to the point where the mobile handset may have awide range of entertainment applications, as well as its essentialcommunication capabilities. With these extended capabilities, thewireless handset has become the most widely deployed and mostconveniently available remote wireless device. Many users consider theirwireless handset to be an essential partner, both in business and inentertainment. As such, these users almost always have access to theirwireless handsets, and are comfortable carrying and using the wirelesshandset in almost any environment. The wireless handset may take theform of a traditional wireless phone, or may be included with a personaldata assistant, gaming device, or music player, for example.

The widespread use of mobile handsets permits users to work remotelywhile still maintaining communication with a home office, co-workers, orclients. However, when working remotely, it may be difficult to interactwith necessary devices, such as a desktop computer. For example, auser's main desktop computer may have a robust set of officeapplications which are far too complicated to operate on a wirelesshandset, and for operational or security purposes, can not be operatedon remote computer systems. If the user needs to access the desktopcomputer, or operate an application on the desktop computer, the usermust obtain the assistance of someone physically in the office, or tryto find a remote computer system that is allowed to remotely access theoffice's network. This limitation for remote users is frustrating andreduces user productivity.

In another example, a work team may need to make a presentation to animportant client. Some of the work team are local to the client, so areable to attend in person, but some of the team are remote, and it wouldbe too costly or time consuming to have them attend the meeting inperson. Therefore, the remote team members use a teleconferencing systemto make their respective part of the presentation. Typically, suchpresentations include the use of a graphical presentation program whichdisplays charts, graphical information, or bullet slides to the clientas a presenter speaks. Since some of team members are remote, a localteam member operates the projection system while the remote memberspeaks. Often, the speaker gets out of sync with the presentation, whichmay confuse or perturb the client audience, or the remote speakerforgets the order or content of the slides. Either way, the client has apoor impression.

What is needed, then, is a device and system that enables a remote userto effectively and efficiently control target devices.

SUMMARY

Briefly, the present invention provides a remote wireless device thatoperates a user interface specific to a particular target application ordevice. The wireless device receives information regarding the status oroperation of the target's application, and uses that information todetermine what information and controls to present to the remote user.The remote user views information regarding the target application, andmakes desired control selections using the available controls. Thewireless device generates a message according to the control selections,and transmits the message to the target device. The target device actsresponsive to the control message, and updated operational informationmay be sent to the remote wireless device.

In a specific example, a target is operating a graphical presentationprogram that includes a set of slides. The target is operating a hostprocess that extracts status information regarding the presentation, andsends that status information to a remote wireless handset. The statusinformation may include, for example, a thumbnail image of the currentslide, a thumbnail image of the next slide, speaker notes, or a list ofupcoming bullet points. The wireless device displays all or a subset ofthe status information to the remote users, and also presents a usercontrol interface. The user control interface may include controls toadvance to next slide, return to last slide, display next bullet, skipnext bullet, for example. As the user makes control selections, thewireless handset generates and transmits control messages to thepresentation program, which then operates according to the command. Thetarget host then collects an updated status, and sends the updatedstatus information to the remote wireless handset.

Advantageously, the wireless controller may be implemented using awireless phone operating on a standard commercial wireless network.Since handsets are so widely deployed and used, the advantages of thepresent invention are available to a wide range of users andapplications. The wireless controller intelligently interacts with atarget device, enabling the user of a handset to make effective andefficient control decisions from a location remote from the targetdevice.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention can be better understood with reference to the followingfigures. The components within the figures are not necessarily to scale,emphasis instead being placed upon clearly illustrating the principlesof the invention. Moreover, in the figures, like reference numeralsdesignate corresponding parts throughout the different views. It willalso be understood that certain components and details may not appear inthe figures to assist in more clearly describing the invention.

FIG. 1 is a block diagram of a wireless control system in accordancewith the present invention.

FIG. 2 is a flow diagram of a wireless control system in accordance withthe present invention.

FIG. 3 is a flow diagram of initializing a wireless control system inaccordance with the present invention.

FIG. 4 is a flow diagram of a wireless control system in accordance withthe present invention.

FIG. 5 is a flow diagram of a wireless control system in accordance withthe present invention.

FIG. 6 is a block diagram of a wireless control system in accordancewith the present invention.

FIG. 7 is a block diagram of a wireless control system in accordancewith the present invention.

FIG. 8 is a block diagram of a wireless control system in accordancewith the present invention.

DETAILED DESCRIPTION

Referring now to FIG. 1, an intelligent wireless control system isillustrated. Control system 10 enables a standard wireless device tointelligently adapt to a target device's condition, and therebyeffectively and efficiently control that remote target device. Wirelesscontrol system 10 has a mobile device 12 communicating through a network14 to a target 16. In one example, mobile device 12 is a wireless mobilehandset communicating on a public communication network. For example,mobile device 12 may be operating according to a CDMA, CDMA 2000, UMTS,GSM, OFDMA, PHS, PCS, or other wireless communication standard. In asimilar manner, communication network 14 cooperates with mobile device12 for establishing two-way communication with target 16. It will beappreciated that any over the air communication network andcorresponding wireless device may be used. Control system 10 has atarget 16 that has an operating application 28 for providing a localfunction. For example, target device 16 may be a computer for locallydisplaying graphical information, or may play unicast, broadcast, ormulticast audio or video content. In another example, the target may bean IPTV device, which is configure to play audio, video, or movie filesreceived on a TCP/IP connection. In this way, application 28 may be ane-mail application, a media player application, an IPTV application, agraphical presentation application, or a file management application. Itwill be appreciated that other types of applications may be used. Thetarget device 16 may connect through a network interface 19 to establishcommunication with the over the air communication network 14. It will beappreciated that multiple communication networks may be used toestablish communication. For example, target device 16 may be connectedto local routers and switches 19 which communicate to an internetserver. The internet server may then couple to the over the aircommunication network 14 using an internet service provider or networkinterface. Although several cooperating networks may be used, mobiledevice 12 and target 16 are placed in communication.

Mobile device 12 has a user interface 26 for enabling a user to inputcontrol instructions for target 16. In this way, user interface 26 hasbeen designed to implement the controllable features of application 28.For example, if application 28 is a media player, the user interface 26may provide play, stop, pause, fast forward, rewind, and volumefunctions, which are typical control functions for media application 28.In another example, if application 28 is a presentation application,then user interface 26 may provide controls for advancing by one slide,going backward by one slide, viewing thumbnails of upcoming slides,allowing selections of individual slides, or enabling positioning of amarker or highlighter. In the specific example of a presentationapplication, itemized bullets on a slide may be introduced sequentiallyusing the mobile controller. In order to more effectively control theremote presentation, the wireless mobile device receives informationabout the target presentation, and adapts its control features accordingto the current state of the presentation. It will be appreciated thateach application 28 will have a particular user interface 26 with whichit may be associated.

System 10 also has a trusted server 22 for assisting in properlyassociating mobile devices and targets. This association is accomplishedin a trusted and secure environment, enabling targets to confidentlyallow mobile devices to assume control of selected aspects ofapplications. In order to facilitate this level of trustedcommunication, trusted server 22 has predefined information 11 as tomobile device information and target information. In one example,trusted server 22 maintains “handle” information for the mobile device.Often the handle identifier will the mobile identification number (MIN)information for each of its mobile devices. In some cases, the mobiledevices may have communicate using a static TCP/IP connection, andtherefore the IP address information may be used as the identifyinghandle. A public key is associated with the device address or MINinformation, which is useful for enabling a public-key/private keyencryption system. In a similar way, each target may have a handle,which is a simple or common name for referring to a target. Often, thehandle is the email address for the target, or may be a usernameassociated with a target's address on a network. In some cases, if thetarget uses a static IP address, the static IP address may also be usedas the identifying handle. Target 16 may also have its public-key storedat the trusted server 22. With the basic mobile device and target deviceinformation stored on trusted server 22, mobile devices and targets maybe associated for control applications.

In a typical application, target device 16 is operating and has a hostapplication or other process available for enabling remote control andinteraction. The remote control process is enabled to send selectedcontrol information to the mobile device, as well as receive and respondto control messages from the mobile device. The information sent fromthe target application to the remote device enables the remote device toadapt its interface to reflect the current state of the targetapplication. In this way, the remote device enables intelligent controland operation of the remote target application. The target 16 connectsthrough network interface 19 to an over the air communication network14. Target device 16 may have predefined information on which particularmobile devices are allowed to control it, or mobile devices may makerequests to control target 16. Either way, target device 16 and mobiledevice 12 cooperate to establish a secure and trusted communicationlink. In one example, target device 16 and mobile device 12 use anasymmetrical public-key/private key encryption mechanism to establish atrusted and authenticated communication link. Once a trustedrelationship has been established, the target device and mobile devicemay move to a more efficient symmetrical security system. In such asymmetrical system, a time-limited session key is used by both themobile device and the target device for encrypting and decryptingsession communications.

With communication established, mobile device 12 either retrieves orreceives a user interface specific to the application 28 to becontrolled in the target. In one example, target 16 downloads thespecific application user interface 26 to mobile device 12, and enablesmobile device 12 to control target 16. In this case, the target device16 may download a user interface specific to the level of controlallowable for the particular mobile device. In this way, the target 16may limit the access or control ability of mobile device 12 bydownloading a restricted-use user interface. In another example, mobiledevice 12 may locally store a user interface, and upon determining thetype of target application to be controlled, retrieve a particular userinterface. In this example, the target device 16 may have an accesscontrol list which is downloaded to mobile device 12 which instructs theuser interface 26 that only a certain level of functionality isavailable. In another example, user interface 26 is not limited, buttarget 19 and its application 28 restricts commands received from mobiledevice 12 to a set of approved commands. Using any one of thesetechniques, the ability of mobile device 12 to control target 16 may belimited, restricted, or controlled to desired levels.

Since user interface 26 is operated remotely, it is desirable thatmobile device 12 be provided with sufficient information so that a usermay be enabled to make control decisions in a timely and effectivemanner. In this way, current operational information regardingapplication 28 is communicated to mobile device 12 and made availablethrough user interface 26. For example, if application 28 is a graphicalpresentation application, then current slide information, as well asavailable slide information is available for mobile device 12. In thisway, a user at mobile device 12 may make timely decisions regardingfuture slides to be viewed at target 16. More specifically, selectedinformation from application 28 is communicated to user interface 26 forfacilitating remote user decisions. When using a graphical presentationapplication, it is often useful to allow the presenter to sequentiallyand individually present each bullet point on a slide. To do so remotelyrequires that the remote user have information regarding the presentstate of the presentation, that is, which slide and bullet is presentlybeing shown to the audience. It would also be useful if the remotepresenter had information regarding the presentation flow. For example,the presenter may desire to know what the next bullet point will be onthe current slide, and may benefit from knowing the content of the nextslide. With this information, the remote user could effectively controlthe presentation, confident that the presentation was properly syncedwith his or her desires. This intelligent remote control enables thewireless remote device to adapt to currently available options, andenables the user to make proper control decisions.

Mobile device 12 may, in one example, be a remote wireless handset. Inanother example, mobile device 12 may be a personal data assistant, aportable computing device, a wireless module installed in a largerdevice, or other remote wireless device. Typically, mobile device 12will be a mobile wireless handset, due to the ubiquitous nature ofwireless phones.

Referring now to FIG. 2, a system for managing an intelligent wirelesscontrol device is illustrated. Control method 50 has preamble activities52 which are performed prior to a control session, initialization steps54 which are performed to discover and authenticate target and mobiledevices, and control processes 56 which are used to actively control atarget from a mobile. Preamble activities 52 are used to register targetand mobile devices with a trusted server so that future discovery andauthentication processes may be done in a secure and trustedenvironment. As shown in block 61, a public-key/private key isestablished for each target. A public-key/private key pair is useful inestablishing asymmetrical secured communication. A handle is alsodefined for each target, which enables simplified identification of atarget. For example, the handle for a computer may be the name of thecomputer on its network, or may be the name of its primary user. Inanother example, a handle may be the e-mail address for the primary userof a computer, or may be another easy to remember name for the computer.In this way, the trusted server has handle and key information for eachavailable target. Each mobile also registers with the trusted server asshown in block 63. Each mobile also has a public-key/private key pair,and registers its public-key with the trusted server. Mobile devicestypically are identified with their mobile identification number (MIN),which is often referred to as their phone number. For data enableddevices, the mobile device may be identified by its TCP IP address. Inthis way, the public-key and address information for each mobile deviceis also preregistered with the trusted server.

During the initialization process 54, the preregistered targets andmobiles are associated for a particular control session. As shown inblock 65, this association may be predefined, or may be dynamically setduring initialization. In one example, a target has a particular set ofmobile devices which are an authorized to control it, and uponinitialization, attempt to establish a trusted communication with eachof the authorized mobiles. In another example, the set of mobile controldevices may not be preauthorized, but may be discovered uponinitialization. In this way, mobile devices may be placed in a state tobe discovered, and targets may be placed in a state to receive requestsfrom mobile devices. In a typical example, a target is made operationaland actively operates a particular target application. A mobile devicemakes a request to control the target's application. The target is in astate where it is able to receive the mobile's request, and thenproceeds to further authenticate the mobile device. For example, theprocess may move to the authentication step as shown in block 67. Thetarget and the mobile use asymmetric cryptography to authenticate eachother. In the process a time-limited session key is also communicatedfrom one of the target and the mobile to the other. Afterauthentication, data in the session is encrypted using the session key.It will be appreciated that the asymmetrical private key/public-keymessaging protocols consume valuable mobile processing power, andtherefore a more efficient symmetrical security system may be desirable.In this way, after secure and trusted communication is established, thetarget and mobile communicate securely via symmetric encryption using asession key. The target and the mobile use asymmetric cryptography toauthenticate each other. In the process a time-limited session key isalso communicated from one of the target and the mobile to the other.After authentication, data in the session is encrypted using the sessionkey.

The mobile now loads an application specific control interface as shownin block 69. This user interface is specific to the applicationoperating on the target. For example, if the application is a mediaplayer, then the application specific interface may include play, pause,stop, fast-forward, rewind, and volume controls. This user interface maybe stored at the mobile device and retrieved, or received in a messagefrom target device. If the user interface is received from the target,then the target may adjust the capability of the user interfaceaccording to the desired level of access for that particular mobile. Inthis way, the access controls for the mobile device may be handled bylimiting the utility of the user interface downloaded to the mobiledevice. In another example, the target may download an access controlmechanism to the mobile, which cooperates with the user interface tolimit the controls available to the user. In one specific example, ifthe local application is a media player, and the target does not desirethe remote user to be able to adjust volume, then the volume control maynot be downloaded to the mobile device. In another example, the accesscontrol list may define that the user interface is not allowed tocontrol volume. Either way, the mobile device would be restricted fromcontrolling the volume on the remote target.

For ongoing control 56, the mobile receives current data from a targetprocess operating on the target as shown in block 71. The type of dataor information received will depend on the specific application beingoperated on the target. The type of information will also depend on theaccess limits for the remote user, and the technical capabilities of theremote wireless device. For example, a fully authorized remote userhaving a wireless device with a full graphical display may receivesubstantial information regarding file structures, application status,available options, etc. However, if the user has more limited accessrights, or has a more limited-capability wireless device, then lessinformation may be sent. In a similar manner, the quality and speed ofthe communication link may dictate the level of information sent.Typically, the target is operating a host process that is configured toextract useful information regarding the operating application. Often,the operating application has an associated API (application programminginterface) that allows the host process to interrogate the operatingapplication, or to extract operational information. The host process mayintelligently determine what information to extract, as well as whichinformation to send to the remote device. To facilitate a positive userexperience, the mobile device desirably controls the target in a mannerconsistent with local or tethered control. In this way, the remote userneeds information sufficient to make proper decisions on target control.Accordingly, the mobile receives current information from the targetregarding status of the application, as well as immediate controloptions. For example, the mobile device may receive informationregarding current media content options, e-mail options, channelselection options, or file information options. In a more specificexample, if the application is a graphical presentation application,then the mobile device may receive information regarding current,immediate past, and future slides that may be presented. The mobile mayalso receive a file structure that enables viewing of all slidesavailable for selection. In this way, a remote user may make decisionsconsistent with decisions made at the local target. Using the localpresentation of the user interface, which includes the targetapplication information, the user sends commands to the host or targetapplication as shown in block 73. This control may not only control theexisting application, but may halt applications, start applications, ormake file selections as shown in block 73.

As generally described above, the mobile device is used to control anapplication operating on the target, and to present sufficientinformation and choices to the user so that the target application maybe effectively and efficiently controlled. In other uses, the mobiledevice may also be used to locally generate content, such as text,images, video, or audio, and send that content to the host application.In this way, the content creation process may be divided between thetarget and the mobile dependent on the particular application, and thespecific features available on the mobile. For example, when the mobileis using an email host application, the user may create text content onthe mobile device. In doing so, the user selects “Compose email” onmobile. Then using speech-to-text or an expanded mobile keyboard, theuser inputs email text and addresses. Then using the user interface forthe target file system, the user chooses attachment to attach to email,and sends the email content to the host target. The user then sendscommands to the target so that the target sends the email.

Referring now to FIG. 3, a system for performing preamble activities fora wireless control device is illustrated. Method 100 has a targetoperating an application. In one example, the target is a computersystem or another communication enabled processor system. The target hascommunication capability such that it may establish communication with atrusted server, such as a key server. The target generates a private keyand public key pair The target also has a handle, which may be a name,e-mail address, or other easy identification value or indicator. Thetarget registers its public key, handle, or name with the trusted keyserver as shown in block 104. In a similar manner, a mobile devicegenerates a private and public key pair and registers its public-key,and handle with the trusted server. For a mobile, the handle typicallywill be its mobile identification number, although in other cases it maybe its TCP/IP address. Also, the mobile may register its preferreddiscovery method with the trusted server. For example, some mobiledevices may more efficiently respond to an SMS, MMS, or EMS message,while other mobile devices may respond more efficiently to TCP/IPcommunications.

More specifically, a mobile device may be configured to operate a smallprocess which acts to determine when a target desires to establish atrusted communication. This small process may monitor for an SMS/MMS/EMSmessage, and more particularly may monitor for an SMS/MMS/EMS messagewith a particular code, value or message. In this way, a target, eitheralone or with in cooperation with a trusted server, may send apredefined SMS/MMS/EMS message to a mobile, and the mobile may thereforebe aware that a target is trying to establish communication. In anotherexample, a mobile may have TCP/IP enabled communication, and maytherefore identify a particular port for receiving requests fromtargets. When a request is received on this specific port address, themobile device becomes aware that the target desires to establish trustedcommunication. It will be appreciated that some mobile devices have bothSMS/MMS/EMS and TCP/IP communication capability, and decision on whichto enable may be made on application specific requirements. In anotherexample, the mobile may register both types of discovery methods, andthe target may attempt both methods in established communication.

During initialization, the target may also define particular accesslimits for a specific mobile, a set of mobiles, or all mobile devices.For example, if a target enables a mobile device to access its filestructure, mobile devices may be restricted to particular files, orparticular folder structures within the file system. In another example,the access rights may be established for each mobile individually, ormay be established for sets of mobile devices. Also, it will beappreciated that the access rights are only the predefined accessrights, and may be changed as specific communications are establishedbetween mobile and target devices. In one example, access control isapplied to resources available at the target application. When theremote device requests to view, use, modify, delete, augment a targetresource, the target consults an Access Control List (ACL) to determinethe remote user's or device's rights. An example of a target resource isthe list of files in a directory or folder. Another example is the listof bullets (i.e. the order and the text of each bullet) in a slide of agraphical presentation. Rights are determined by consulting the variousACLs. It will be appreciated that multiple levels of ACLs may be used.For example, the user may have a specific ACL, the type of device mayhave a specific ACL, and the type of communication link may have aspecific ACL. In application, the most restrictive ACL “wins” and themobile will be denied access according to the most limiting ACL.

Referring now to FIG. 4, a method of using a wireless control device isillustrated. Method 125 has a mobile device that is prepared to bediscovered as shown in block 127 In this way, the mobile device may haveregistered its mobile identification number and public key as shown inblock 129. After registration, the mobile device monitors its SMSmessages, or its TCP/IP ports, for contact by an appropriate target. Ifsuch a request is made, then the mobile starts a local client processand continues to establish trusted communication. In another example asshown in block 133, the mobile device may generate a request controlspecific target. For example, a user may walk into a room and be invitedto control a target application. The mobile user may be invited to senda message to a target SMS mailbox or TCP/IP address, and thereby beginthe establishment of trust communication.

The target is also prepared for discovery as shown in block 136. In oneexample, the target has a set of predefined mobile devices that areauthorized to control it. In this way, the target may simply recall themobile addresses as shown in block 138. In other cases, the target mayreceive requests for control, and thereby need to request a specificmobile handle (MIN or address) as shown in block 140. Finally, thetarget may have made itself available to receive requests, and therebywait for requests from mobile devices as shown in block 142.Irrespective of which process is used to obtain the mobile addressinformation, the target cooperates with the key server to obtain themobile public-key. The mobile public-key, which has been prestored bythe mobile device, is associated with the address for the mobile device.In this way, the target is able to retrieve the public-key for themobile device. The target then encrypts the target IP address and thetarget handle using first the target private key and then the resultingmessage is encrypted to the mobile public-key. This twice encryptedmessage is then transmitted wirelessly to the mobile device. The mobiledevice, using its private key, decrypts the message. Upon decryptingwith its private key, the mobile obtains the handle for the target. Themobile is then able to communicate with the trusted server to obtain thepublic-key for the target. Using the public-key of the target, themobile further decrypts the message and obtains the target address asshown in block 157.

Upon confirming messages and addresses, the mobile confidently truststhe origination of the target message. Accordingly, the mobile generatesa session key as shown in block 159. The session key is intended forsymmetrical communication encryption, which is more efficient thenasymmetrical encryption. The session key is encrypted by the mobileusing its private key, and then encrypted to the target's public-key asshown in block 164. The twice encrypted session key is then wirelesslycommunicated to a target as shown in block 164. The target then decryptsthe message using its private key and then the mobile public-key asshown in block 166. Provided the decryption process completessuccessfully, the target has authenticated the mobile as a trustedcommunication partner. It also has obtained the session key as shown inblock 168. The target and mobile may then proceed with symmetricalcommunication encryption as shown in block 171. The process illustratedwith FIG. 4 is used to establish a trusted communication between atarget and a mobile. Further, the process described with reference toFIG. 4 also enables target devices and mobile devices to preregisterwith a trusted third party, and then upon application needs, establishcontrol relationships between mobile devices and target devices.

Referring now to FIG. 5, a method for controlling a target device isillustrated. Method 200 has a mobile registering with a trusted serveras shown in block 202. As generally described with reference to FIG. 4,the mobile establishes trusted communication with the target as shown inblock 204. Once trusted communication is established, the mobile mayretrieve a target interface as shown in block 207, or may receive atarget interface from the target as shown in block 206. Since thecontrol interface is specific to the application operating on thetarget, the mobile needs application information in order to retrievethe target interface as shown in block 207. For example, if the targetis operating a media player, then the mobile uses this information toretrieve a player user interface from its local memory. Of course, thespecific capability available to the local player the may be adjustedaccording to the specific player activated at the target, or accordingto an access control list. It will be appreciated that other methods oflimiting the ability of the user interface may be used. In anotherexample, the target may detect or otherwise determine the type of mobiledevice used, and download a specific user interface to the target. Forexample, the target may determine the user has a specific wirelesshandset having a particular resolution for its graphical display. Thetarget may also identify the user as having a particular access limit,and thereby download a user interface particular to the mobile deviceand according to the level of access allowed for that user. Once themobile device has received the user interface, the user interface isactivated on the mobile device as shown in block 210. The user interfaceoperates according to the specific mobile capability, and according toany target access controls that may be set. The mobile may also receivemore specific control access information as shown in block 213. Thiscontrol access information may be in the form of limitations in theremote control user interface, or in the types of information or optionsmade available to the remote user. It will be appreciated that thataccess control information may be provided in alternative forms.

In using the control interface, the control interface desirably hasinformation regarding the current status and available options at thetarget application. Since the mobile device may be operated from aremote location, and communicates through public communication networks,this information is important to provide an effective, robust, anduser-friendly experience for the remote user. In this way, the mobiledevice and control interface receives application information from thetarget application as shown in block 213. This information may includefor example, information regarding current status, available options,and actions taken at the target.

With trusted and controlled communication established, the mobile is nowable to use the application control interface to send commands to thetarget as shown in block 215. These commands may be for example, acommand to launch a new application as shown in block 217, a command tohalt operation as shown in 218, or other program operation. The commandsmay also include file commands such as open the file 219, search forfiled or phrase as shown in block 220, or other file or folderoperation. The commands may also include commands such as playing, fastforward, rewind, play, pause, advance 221 or other commands associatedwith media controls. The commands may also include commands for settingor disabling alerts as shown in block 222, or may include volumecontrols 223 or motion controls 224. The controls may also include broadselection capabilities 225 or the ability to activate processes withintarget applications. For example, the mobile device may be used to sendan e-mail from a target computer system. In a case where the remotedevice has substantial keyboard or voice-to-text capability and arelatively large display, the remote device may include a robust set ofemail drafting and editing controls. In the case of a graphicalpresentation, the remote wireless control may include: advance orreverse one or more slides, or pick a slide form thumbnail list. Theremote may allow introduction or bypassing of bullets from individualslides. The remote may also present speaker comments or notes to assistthe remote user in making the presentation. In the case of controllingan IPTV device, the wireless remote may have controls for: play, pause,stop, select channel, advance, or rewind buffered channel. The wirelessremote may also allow channel select from graphical or textual channellisting. In more sophisticated wireless remotes, the wireless remote mayeven support a picture-in-a-picture feature to preview content beforemaking the selection active on the target.

Once the mobile has initiated a command as shown in block 215, themobile device generates a command message and forwards the commandmessage through a public communication network to the targetapplication. The target is operating a host process which receives themessage and parses it to extract the specific command. The localapplication has an API (application programming interface) which allowsan API command. The local process converts the command received from themobile into an API command or data, and sends the appropriate command ordata to the application. The application then executes the command asreceived from the mobile device. In another example, the mobile devicemay make information or status requests for the target application.Since the mobile device may be remotely positioned, it may need periodicstatus updates to properly inform the mobile user of current controloptions. In another example, the target application may send updateinformation as target control options change. In some cases, it may bepossible that the mobile device and the target application to becomeunsynchronized. This may occur, for example if a local or tetheredcontrol is also operating the target application. In this case,synchronization could be affected. Synchronization may be lost for otherreasons, for example, if another local or remote user changes a filelocation or deletes a file. However, the target is aware that a remotemobile is authorized to operating it, and thus whenever such changesoccur, the target may easily send the new state or an update to themobile. In some cases, the update would immediately be communicated tothe remote user, and in other cases, the change would affect futurechoices the remote user could make.

In a particular example as shown in block 229, after the target performsthe command in block 215, the target then responds to the mobile bysending a confirmation that the command has been performed, or sendsupdated information regarding the status of the target application.Either way, the mobile device becomes aware of the control status of thetarget application. In this way, the user at the mobile device may makemore accurate and effective decisions on future control of the targetapplication.

Referring now to FIG. 6, and a system for wireless control isillustrated. System 250 has multiple mobile devices, such as mobiledevices 252 and 254 for communicating through an over the aircommunication network 260. As previously described, mobile devices 252and 254 may have registered with a trusted server 261 thereby havingtheir mobile data 265 stored on the trusted server. In a similar manner,multiple targets such as target 271 and target 273 may also communicatethrough a network interface 269 to the over the air communicationnetwork 260. The targets may also have their information stored on thetrusted server as shown in block 265. Each target may be running one ormore applications. For example, target 273 is shown to be operatingapplication 283. In other example, target 271 is shown to be operatingapplications 276, 278, and 281. Accordingly, mobile device to 252 may beset to establish control for one of the targets, such as target 271, andmobile device 254 made may be established to have control of targetdevice 273. In another example, both mobile devices may be used tocontrol applications on target 271, or both mobile devices may be usedto control application 283. It will be appreciated that manyalternatives exist for the relationship between the mobile devices andthe applications.

An auxiliary computer 267 may also be used to facilitate setting up andusing the wireless control system. The auxiliary computer 267 may beused, for example, to define intended control relationships. In thisway, a user may use auxiliary computer 267 to define which mobiledevices, such as mobile device 252 and 254 should be associated withparticular applications operating on specific targets. It will beappreciated that the auxiliary computer 267 may communicate throughvarious network connections, and may be implemented through one or morenetwork systems.

Referring now to FIG. 7, another wireless control system is illustrated.Wireless control system 300 is similar to wireless and control systempreviously described, so will not be discussed in detail. Wirelesscontrol system 300 does not have a trusted third party key server, butrelies upon predefined relationships to establish trustedcommunications. For example, mobile device 302 has target data 315 whichdefines an IP address and a public key for communication with aparticular target. In a similar manner, target 309 has mobile datainformation 313 which defines particular mobile address and public keyinformation for establishing secured and trusted communication withmobile device 302. The mobile and the target may share their respectivepublic keys, for example, by exchange over a secure network, or bypreloading the keys by exchanging magnetic media. The mobile data 313also includes discovery method information so that target 309 caninitiate the client process on mobile device 302. Since the mobiledevice and target device 309 all have a predefined security anddiscovery information, no third-party discovery server is required. Inthis way, user device 317 may effectively, securely and efficiently linkcontrol application 322. Of course, target 309 may communicate to theover the air communication networks through a network interface 311. Aswith previous networks, the over the air communication network 306 maybe a CDMA, CDMA2000, UMTS, GMS, edge, GPRS, PHS, or PCS standardtelecommunications system. Of course, it will be appreciated that otherover the air wireless communication standards may be used.

Referring now to FIG. 8, a wireless control system is illustrated.Wireless control system 350 has a mobile device 352 communicatingthrough an over the air communication network 358 to a target computersystem 356. The mobile device has an information processing application367 which is used for receiving and transmitting information to the overthe air communication network 358. In a similar manner, the targetcomputer 356 has an information processing application 376 for sendingand receiving information on the over the air communication network 358.

The mobile device 352 operates a control interface that has an interfacedisplay 363 for informing a mobile user of available control options. Inparticular, this interface display displays information according toavailable control available at the target application, as well aslimitations according to access control limits. Input controls 361 arealso present of the mobile device for enabling target control. Forexample, the mobile device may have a set of soft keys, or may defineparticular keys to implement specific functions for the targetapplication. It will be appreciated that many options exist for definingkeys, knobs, controls and other imports on the mobile device. The mobiledevice 352 also has local storage 365 for storing control informationand user interface information.

Target computer 356 has an application 371 which operates to provide alocal target function. For example, the application 371 may be a mediaplayer, graphical presentation, e-mail process, or other local operatingapplication. The application has an API control input 369 which isenabled to receive commands from information processing application 376.In this way, messages received from the information processing module376 may be used to effect control in application 371. More particularly,when an input control 361 is selected, the mobile device 352 generates acontrol message using the information processing module 367. The controlmessage is transmitted through the over the air communication network tothe target computer 356 and received by the information processingmodule 376. The information processing module 376 extracts the APIcommand information and transfers it to the application 371. In thisway, the application 371 performs the control selected by mobile device352. The application 371 associates with the application informationmodule 378 for maintaining status information regarding the application.The application information may be communicated to the mobile device 352for allowing the mobile user to make more effective control decisions.For example, application information 378 may be processed throughinformation processing module 376 for communication to informationprocessing module 367 on the mobile device. The application's statusinformation may thereby be displayed on the interface display 363, andalso may affect which input controls are available for use, or theirparticular function as shown in block 361.

Referring again to the target computer 356, when the API command isreceived at the application 371, the application proceeds to perform aparticular control function. That control function may be, for example,to display particular information, to play media in a defined way, tostart, to stop, or pause an application, or it may be to control anattached device. It will be appreciated that many other applicationresults may be used.

While particular preferred and alternative embodiments of the presentintention have been disclosed, it will be appreciated that many variousmodifications and extensions of the above described technology may beimplemented using the teaching of this invention. All such modificationsand extensions are intended to be included within the true spirit andscope of the appended claims.

1. A method for controlling a target device comprising: monitoring for atrust initialization message at a first mobile device, wherein the trustinitialization is transmitted from the target device; receiving at thefirst mobile device the trust initialization message; establishing atrusted communication link between the target and the first mobiledevice based on authenticating a unique code presented by the firstmobile device; operating a target control interface on the first mobilewireless device, wherein the target control interface is adjusted basedon at least two factors selected from the group consisting of: the firstmobile device capability, the quality of the link, the speed of thelink, a first mobile predetermined access level, and the presence ofanother mobile device operating the target; presenting target controlinformation at the first mobile wireless device; receiving a controlinstruction responsive to presenting the target control information;generating a control message according to the control instruction; andtransmitting wirelessly the control message to an address for the targetdevice.
 2. The method according to claim 1, wherein the presenting stepfurther comprises the steps of: receiving target application statusinformation; and synchronizing the target control interface using thetarget application status information.
 3. The method according to claim2, wherein the target application status information is selected fromthe group consisting of: target device file information; target devicemedia information; current display status of the target device; andcurrent control options available at the target device.
 4. The methodaccording to claim 1, further comprising the steps of: receiving targetapplication status information responsive to transmitting the controlmessage; and synchronizing the target control interface using the targetapplication status information.
 5. The method according to claim 1,further comprising the step of receiving the target control interface ina wireless communication.
 6. The method according to claim 1, whereinthe trust initialization message is an SMS, MMS, or EMS message or amessage at a predefined IP port.
 7. The method according to claim 1,wherein the first mobile wireless device is a mobile wireless handsetoperating according to a commercial, military, or governmental airinterface.
 8. The method according to claim 1, wherein the first mobilewireless device is a mobile wireless handset operating according toCDMA, OFDMA, CDMA2000, UMTS, GSM GPRS, EDGE, PHS, or PCS.
 9. The methodaccording to claim 1 wherein the unique code is selected from a groupconsisting of: the MIN of the first mobile device, the IP address of thefirst mobile device, a user specified code, and combinations thereof.10. The method according to claim 1 further comprising the steps of:monitoring for the trust initialization message at a second mobiledevice; receiving at the second mobile device the trust initializationmessage; establishing a second trusted communication link between thetarget device and the second mobile device based on authenticating asecond unique code presented by the second mobile device; operating asecond target control interface on the second mobile device, wherein thesecond target control interface is adjusted based on at least twofactors selected from the group consisting of: the second mobile devicecapability, the quality of the second link, the speed of the secondlink, a second predetermined access level, and the presence of anothermobile device operating the target device; presenting target controlinformation at the second mobile device, wherein the target controlinformation is based on the control message from the first mobilewireless device; receiving from the second mobile device a controlinstruction responsive to presenting the target control information;generating a control message at the second mobile device according tothe control instruction; and transmitting wirelessly from the secondmobile device the control message to an address for the target device.11. The method according to claim 10 wherein the first predeterminedaccess level provides different access rights than the secondpredetermined access level.